]> pilppa.com Git - linux-2.6-omap-h63xx.git/commit
Group short-lived and reclaimable kernel allocations
authorMel Gorman <mel@csn.ul.ie>
Tue, 16 Oct 2007 08:25:52 +0000 (01:25 -0700)
committerLinus Torvalds <torvalds@woody.linux-foundation.org>
Tue, 16 Oct 2007 16:43:00 +0000 (09:43 -0700)
commite12ba74d8ff3e2f73a583500d7095e406df4d093
treea0d3385b65f0b3e1e00b0bbf11b75e7538a93edb
parentc361be55b3128474aa66d31092db330b07539103
Group short-lived and reclaimable kernel allocations

This patch marks a number of allocations that are either short-lived such as
network buffers or are reclaimable such as inode allocations.  When something
like updatedb is called, long-lived and unmovable kernel allocations tend to
be spread throughout the address space which increases fragmentation.

This patch groups these allocations together as much as possible by adding a
new MIGRATE_TYPE.  The MIGRATE_RECLAIMABLE type is for allocations that can be
reclaimed on demand, but not moved.  i.e.  they can be migrated by deleting
them and re-reading the information from elsewhere.

Signed-off-by: Mel Gorman <mel@csn.ul.ie>
Cc: Andy Whitcroft <apw@shadowen.org>
Cc: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 files changed:
fs/buffer.c
fs/dcache.c
fs/jbd/journal.c
fs/jbd/revoke.c
fs/proc/base.c
fs/proc/generic.c
include/linux/gfp.h
include/linux/mmzone.h
include/linux/pageblock-flags.h
include/linux/slab.h
kernel/cpuset.c
lib/radix-tree.c
mm/page_alloc.c
mm/shmem.c
mm/slab.c
mm/slub.c